The United States positioned its largest concentration of air power in the Middle East since the 2003 Iraq invasion, the Wall Street Journal reported, citing US and foreign officials. United States President Donald Trump has not yet decided whether to order strikes on Iran, though the buildup reportedly gives Washington the ability to conduct a prolonged campaign rather than a single strike. It includes F-35 and F-22 fighters, command-and-control aircraft and two aircraft carriers. The news comes after the US and Iranian negotiators met in Geneva on Tuesday for talks mediated by Oman.